feat(moderation): モデレーターがユーザーのアイコンもしくはバナー画像を未設定状態にできる機能を追加 (MisskeyIO#222)

Co-authored-by: まっちゃとーにゅ <17376330+u1-liquid@users.noreply.github.com>

locales/index.d.ts

@@ -567,6 +567,10 @@ export interface Locale {
     "script": string;
     "disablePagesScript": string;
     "updateRemoteUser": string;
+    "deleteUserAvatar": string;
+    "deleteUserAvatarConfirm": string;
+    "deleteUserBanner": string;
+    "deleteUserBannerConfirm": string;
     "deleteAllFiles": string;
     "deleteAllFilesConfirm": string;
     "removeAllFollowing": string;